Hydrogen fluoride recovery process
    1.
    发明授权
    Hydrogen fluoride recovery process 失效
    氟化氢回收工艺

    公开(公告)号:US5800795A

    公开(公告)日:1998-09-01

    申请号:US948213

    申请日:1997-10-09

    IPC分类号: C01B7/19

    CPC分类号: C01B7/196 C01B7/195

    摘要: Process for the recovery of hydrogen fluoride (HF) from a mixture, preferably an azeotropic mixture, of HF with water and/or an organic compound such as 134a, 125 or 133a, which comprises contacting the mixture with lithium fluoride or an alkaline earth metal fluoride to form a metal fluoride-hydrogen fluoride compound (e.g. lithium bifluoride, LiHF.sub.2), separating the compound and decomposing it to liberate hydrogen fluoride therefrom. The process is useful for recovering HF from azeotropic or azeotropic-like mixtures.

    摘要翻译: HF与水和/或有机化合物如134a,125或133a的混合物,优选共沸混合物回收氟化氢(HF)的方法,包括使该混合物与氟化锂或碱土金属 氟化物形成金属氟化物 - 氟化氢化合物(例如,二氟化锂,LiHF 2),分离化合物并将其分解以从其中释放出氟化氢。 该方法可用于从共沸或共沸混合物中回收HF。